3 years ago

‼️ PLEASEE HELPPP ‼️

Mathematics

1 answer:

Naddik [55]3 years ago

4 0

Answer:

Step-by-step explanation:

3x - 27 = x +11

3x -27 +27 = 11 + 27

3x - x = x -x + 38

2x = 38

2x ÷ 2 = 38

X = 19

19 × 3 -27 = 30

You might be interested in

Which of the following statements are true? Select all that apply.

oksian1 [2.3K]

Answer:

$\large\boxed{4a^o+4b^o=360^o}\\\boxed{2(a^o+b^o)=180^o}\\\boxed{a^o=90^o-b^o}$

Step-by-step explanation:

$4a^o+4b^o=360^o\qquad\text{divide both sides by 2}\\\\2a^o+2b^o=180^o\qquad\text{distributive}\\\\2(a^o+b^o)=180^o\qquad\text{divide both sides by 2}\\\\a^o+b^o=90^o\qquad\text{subtract}\ b^o\ \text{from both sides}\\\\a^o=90^o-b^o$

3 0

4 years ago

Factor completely: <br> 4x²-49=

natima [27]

$4x^2-49$

Use the Difference of Two Squares Formula, $x^2-y^2=(x+y)(x-y)$

If x² = 4x², then x = √4x², x = 2x

If y² = 49, then y = √49, y = 7

We know both x and y, straight to formula.

$x^2-y^2=(x+y)(x-y)\\4x^2-49=(2x+7)(2x-7)$

Therefore, the factored form of 4x²-49 is (2x+7)(2x-7)

6 0

3 years ago

TIME REMAINING

Sonbull [250]

The correct answers is B

4 0

3 years ago

Read 2 more answers

A rectangular field 50 metres wide and x metres long required 260 metres of fencing

KatRina [158]

Answer:

x=80

Step-by-step explanation:

im going to assume this is perimeter.

50+50=100

260-100=160

160÷2=80

3 0

3 years ago

Read 2 more answers

There is 45kg of mortar. The ratio of cement to sand in the mortar mix is 1 to 4. How many kg of cement is in the mortar

PtichkaEL [24]

Answer:

There are 11.25kg in the mortar

8 0

3 years ago